Someone

function validate_file_upload_name($fname, $ext){	$fname = trim($fname);	$ext = trim($ext);	if(!empty($fname))	{		if(!empty($ext))		{	$fname = str_replace('.'.$ext,'',$fname);	}		$fname = preg_replace('/\W/', '', $fname);		if(strlen($fname) > 30)		{	$fname = substr($fname,0,30);	}	}	return $fname;}